<template>
  <div id="app">
    <div>
      <span>姓名:</span>
      <input type="text" v-model="name" />
    </div>
    <div>
      <span>年龄:</span>
      <input type="number" v-model.number="age" />
    </div>
    <div>
      <span>性别:</span>
      <select v-model="from">
        <option value="男">男</option>
        <option value="女">女</option>
      </select>
    </div>
    <div>
      <button @click="addFn">添加/修改</button>
    </div>
    <div>
      <table border="1" cellpadding="10" cellspacing="0">
        <tr>
          <th>序号</th>
          <th>姓名</th>
          <th>年龄</th>
          <th>性别</th>
          <th>操作</th>
        </tr>
        <tr v-for="(item, index) in arr" :key="index">
          <td>{{ index + 1 }}</td>
          <td>{{ item.name }}</td>
          <td>{{ item.age }}</td>
          <td>{{ item.gender }}</td>
          <td>
            <button @click="delFn(index)">删除</button>
            <button @click="xiu(item, index)">编辑</button>
          </td>
        </tr>
      </table>
    </div>
  </div>
</template>
<script>
export default {
  data() {
    return {
      we: undefined,
      re: false,
      from: "",
      name: "",
      age: "",
      arr: [
        {
          name: "Tom",
          age: 19,
          gender: "男",
        },
        {
          name: "Jone",
          age: 21,
          gender: "女",
        },
      ],
    };
  },
  methods: {
    addFn() {
      if (this.re) {
        this.arr.forEach((item, index) => {
          if (index == this.we) {
            item.name = this.name;
            item.age = this.age;
            item.gender = this.from;
          }
        });
        (this.name = ""), (this.age = ""), (this.from = "");
        this.re = false;
      } else {
        if (this.name.trim().length === 0 || this.age <= 0) {
          return alert("请输入信息");
        }
        this.arr.push({
          name: this.name,
          age: this.age,
          gender: this.from,
        });
        (this.name = ""), (this.age = ""), (this.from = "");
      }
    },
    xiu(item, index) {
      console.log(item);
      this.name = item.name;
      this.age = item.age;
      this.from = item.gender;
      this.we = index;
      this.re = true;
    },
    delFn(index) {
      this.arr.splice(index, 1);
      this.re = false
    },
  },
};
</script>
